I did a little searching and found that if the steering wheel doesn't have the radio control already there you cant get it, without some work being done. OK, if thats the case why does Nissan put a plastic cover over where the control should be that pops of and give people (me) the impression that it can be added. Is this hard to do by the way? I have an 01 XE.

I dont know how hard it is to do.

But if a manufacturer can save some $$ since MOST people wont do it they will just put in the generic piece.